Unpacking the actual math behind this calculation requires basic exponential arithmetic. The confusion online typically stems from differing naming conventions between English-speaking nations and regions relying on older numerical systems.
Under the short scale numeration system used in the United States and international finance, one trillion equals:
$$1,000,000,000,000 = 10^{12}$$
When raising an exponential expression to another power, standard exponentiation rules dictate that you multiply the powers together:
$$(10^{12})^{10} = 10^{12 \times 10} = 10^{120}$$
The end result is an integer written as 1 followed by 120 zeros:
`1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000`
Naming a number of this magnitude presents its own linguistic hurdles. Under modern short-scale naming rules, $10^{120}$ is officially named one noventrigintillion. In older British long-scale traditions or historical nomenclature tables, amateur mathematicians frequently mislabel or conflate it with names like novemvigintillion (which represents $10^{90}$ in the short scale or $10^{174}$ in classic Chuquet systems). To bypass linguistic tangles, physicists and computational scientists almost exclusively rely on scientific notation: $1 \times 10^{120}$.
